Import Ballscrew — Buy in Bulk from Supplier in Taiwan

The Tuma ballscrew is a precision linear motion component manufactured from alloy steel for converting rotary motion into precise linear displacement. Key specifications include a high-strength alloy steel construction, high accuracy tolerance for smooth linear motion, significant load capacity suitable for CNC machines and robotics, multiple sizes and lead configurations, and advanced surface treatment for wear resistance and reduced friction. These specifications position it for demanding applications where positional accuracy and repeatability are critical.

Ballscrews of this type typically achieve positioning accuracy in the micrometre range, with standard lead accuracy grades of C3, C5, C7 or C10 under ISO 3408 or DIN 69051 classifications. The alloy steel substrate is typically through-hardened to 58-62 HRC on raceways, with optional induction hardening for the shaft. Surface treatments commonly include black oxide, hard chrome plating, or chemical nickel plating depending on corrosion resistance requirements. Preload mechanisms, whether fixed-point (double nut) or constant-pressure (single nut with spring), eliminate backlash and improve rigidity for dynamic cutting operations. Standard shaft diameters for this class of ballscrew range from 6 mm to 80 mm, with leads from 1 mm to 50 mm, though the exact portfolio should be confirmed with Tuma directly.

Primary buyers include OEMs of CNC machine tools, semiconductor equipment, medical imaging devices, and automated assembly systems. The aerospace and automotive sectors use these components in fixture positioning and test rigs. When sourcing from Tuma in Taichung, buyers should confirm the specific accuracy grade, preload class, end machining options (bearing journals, keyways, threads), and whether the ball nut is supplied flanged, cylindrical, or in a compact design. Lubrication requirements (grease vs. oil), expected service life in million revolutions (L10 life), and contamination protection (bellows, scrapers) are also critical to specify for quotation.

Tuma operates from No 9, 113 Lane, Ping Teng 10th Street, Lau Lu Li, Shai Lu Town, Taichung 40335, Taiwan. The supplier is classified at the harbour trust tier and imported supplier tier on the platform, with no response rate or average response time currently recorded. This profile indicates a Taiwan-based manufacturer or trader of mechanical components serving industrial buyers, though specific verification details, certification scope, and operational scale are not stated in the available data.

The listing presents Tuma as offering ballscrews with customization in sizes and lead configurations, alongside competitive minimum order quantities and international shipping terms including FOB and CIF. However, the exact product specialisation depth, whether Tuma manufactures in-house or sources from sub-contractors, and the extent of its quality management system certification are not specified. Buyers should verify directly with Tuma its manufacturing capabilities, inspection equipment (such as laser interferometer testing for lead accuracy), sample availability, and whether it holds ISO 9001 or specific aerospace certifications like AS9100.